./prontouso.com

FINANCE & BUDGETING

Marketplace Profit Calculator

Calculate your net profit per unit, margin, markup, platform fees, and target selling price for Mercado Libre, Shopee, Amazon, Etsy, and online stores.

Tool statusRuns in your browser
Preview
marketplace-profit-calculator
PRO● LIVE

Product & Sales Costs

Final advertised product price

Preset Scenarios

Unit Financial Results

Net Profit per Unit$16.80Net Profit Margin: 14%
Break-Even Price (0% Profit)$97.30Markup / ROI on Cost: 37.3%
Target Price for 15% Margin$122.03
Total Cost per Unit$103.20
Selling Price Breakdown
Product (COGS): $45.00
Platform Fees: $25.20
Shipping & Packaging: $21.00
Taxes: $7.20
Ads: $4.80
Net Profit: $16.80
Monthly Financial Projection (100 un)
Monthly Gross Revenue$12,000.00
Monthly Total Costs$10,320.00
Monthly Net Profit$1,680.00
Healthy profit margin! Your price safely covers all platform fees, direct costs, and taxes.

How it works

  1. Enter your input

    Fill in the values, paste your text, or upload the file this tool works with.

  2. See results instantly

    Most tools update live as you type; a few use a single button. Either way, the result appears right on this page.

  3. Use your results

    Copy, download, or share what the tool produces — you're always in control of the output.

Privacy and processing — Runs locally in your browser. This tool does not upload your input.

What is Marketplace Profit Calculator?

The Marketplace Profit Calculator helps online sellers accurately determine net profit, profit margins, platform commission deductions, taxes, and target break-even prices without hidden losses.

UNDERSTAND THE TOOL

How to calculate marketplace selling profit and break-even price

Calculate unit net profit, profit margin, markup on cost, and break-even selling prices across e-commerce marketplaces like Mercado Libre, Shopee, Amazon, Etsy, and eBay.

Account for all marketplace cost layers

Online selling involves more than just subtracting product purchase cost from selling price. Platforms deduct percentage commissions, flat fees per order, seller-paid shipping, and payment processing, while taxes and advertising spend further reduce take-home profit.

Break-even vs. target profit margin pricing

Your break-even price represents the minimum threshold where net profit is exactly zero. To build a sustainable e-commerce business, you must set an advertised selling price that guarantees your desired target net margin after all variable and fixed deductions.

Pricing & margin formulas

Total Unit Costs
product_cost + packaging + shipping + fixed_fee + (selling_price * (commission_pct + tax_pct + ads_pct) / 100)
Net Profit
selling_price - total_unit_costs
Break-Even Selling Price
(product_cost + packaging + shipping + fixed_fee) / (1 - (commission_pct + tax_pct + ads_pct) / 100)

Marketplace Sale Example ($100 price, $35 product cost)

With 14% commission, $4 fixed fee, $5 shipping, $2 packaging, 6% taxes, and 5% ad spend, the net profit is $29 (29% net margin) with a break-even price of $61.33.

Privacy & Calculation Notes

All e-commerce figures and price calculations run locally inside your browser. No sales or pricing data is transmitted to servers.

Frequently Asked Questions

What is the difference between margin and markup?

Profit margin measures net profit as a percentage of the selling price (profit / selling price), while markup measures profit as a percentage of the product acquisition cost (profit / product cost).

How do marketplace fixed fees impact low-priced items?

Fixed fees (e.g. $2-$5 per transaction) take a much higher percentage of low-ticket items. A $15 product with a $3 fixed fee loses 20% in fixed platform fees alone before percentage commissions.

How should I budget for advertising spend?

Set aside your average ad spend as a percentage of gross sales (typically 5% to 15%) so ad campaigns don't erase your net profit margin.

Related Tools